Reference for Sanhedrin 204:15
(מלכים א כב, כא) ויצא הרוח ויעמד לפני ה' ויאמר אני אפתנו ויאמר ה' אליו במה ויאמר אצא והייתי רוח שקר בפי כל נביאיו ויאמר תפתה וגם תוכל צא ועשה כן מאי רוח א"ר יוחנן רוחו של נבות היזרעאלי
And there came forth the spirit, and stood before the Lord, and said, I will persuade him. And the Lord said unto him, Wherewith? And he said, I will go forth, and I will be a lying spirit in the mouth of his prophets. And he said, Thou shalt persuade him, and prevail also: go forth, and do so.<span class="x" onmousemove="('comment',' Ibid. XXII, 21f. ');"><sup>24</sup></span> Which spirit [is meant]? — R. Johanan said: The spirit of Naboth the Jezreelite. What is meant by 'go forth'? — Rabina said: Go forth from within my barrier, as it is written, He that telleth lies shall not tarry in my sight.<span class="x" onmousemove="('comment',' Ps. CI. 7: v. supra, p. 592, nn. 3 and 4 for commentary. ');"><sup>25</sup></span>